Euchill lithium bromide absorption chillers

Absorption chillers operate according to a water – lithium bromide absorption thermodynamic cycle, where water acts as the refrigerant fluid and lithium bromide as the absorbent fluid. This principle allows thermal energy to be transformed into cooling energy, ensuring efficient and sustainable chilled water production.

The process begins in the generator, where the diluted water and lithium bromide solution is heated, causing water evaporation and the concentration of the LiBr solution. The produced water vapor then passes into the condenser, where it is cooled and condensed through heat exchange with water from the cooling circuit.

The refrigerant liquid (condensed water vapor), after a reduction in pressure and temperature, reaches the evaporator, where it evaporates again at low temperature, removing heat from the system water. The cold vapor thus generated then enters the absorber, where it is reabsorbed by the concentrated lithium bromide solution coming from the generator. This process requires continuous cooling guaranteed by the cooling circuit water. Low-temperature evaporation occurs because there is an absolute pressure of only a few mbar inside the evaporator.

The resulting diluted lithium bromide solution is then sent back to the generator, passing through a heat exchanger that recovers energy from the hot flow of concentrated solution leaving the generator. In this way, the cycle closes and renews itself continuously, ensuring high energy efficiency and reduced consumption through the intelligent use of heat.